<p>Occurrence of individual diffusion states in labeled G proteins.</p>

Additionally, fractions of molecule tracks exhibiting restricted (immobile molecules and confined diffusion, diagonal line pattern) and non-restricted movement (free and directed diffusion, dotted pattern) are shown. B) Box plots of relative frequency of non-restricted movement in labeled G_s (yellow), G₁₂ (light blue), G₁₃ (dark blue), G_i1 (red), G_o (orange), G_q (magenta), and G_nat (green).

The boxes indicate the median and the interquartile range. Letters above individual datasets indicate similarity grouping based on statistical analysis (<i>α</i> = 0.05, <i>p</i> < 0.0001, <i>H</i> = 67.59, <i>ε</i>^<i>2</i> = 0.62).</p>